Barnet lost their match with Torquay 1-0, with Izale McLeod missing a penalty. The Bees failed to get a shot on target after the Gulls scored in the 49th minute. Southend beat Cheltenham 4-0 after the Robins had a man sent off early on.
Torquay move four points clear inside the automatic promotion spots, but can be caught by both Shrewsbury and Crawley on games in hand, while Southend cement their play-off spot in fifth.
Barnet stay 20th, four points ahead of the Bulls with a worse goal difference.